12120212201221 has 8 divisors (see below), whose sum is σ = 12176767652544. Its totient is φ = 12063782290560.

The previous prime is 12120212201219. The next prime is 12120212201233. The reversal of 12120212201221 is 12210221202121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12120212201221 - 2¹ = 12120212201219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120212201281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31191625 + ... + 31577806.

It is an arithmetic number, because the mean of its divisors is an integer number (1522095956568).

Almost surely, 2^{12120212201221} is an apocalyptic number.

It is an amenable number.

12120212201221 is a deficient number, since it is larger than the sum of its proper divisors (56555451323).

12120212201221 is an equidigital number, since it uses as much as digits as its factorization.

12120212201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62770331.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12120212201221 its reverse (12210221202121), we get a palindrome (24330433403342).

The spelling of 12120212201221 in words is "twelve trillion, one hundred twenty billion, two hundred twelve million, two hundred one thousand, two hundred twenty-one".